92 MEMOIRS ON THE COLEOPTERA 



some pale area at apex, the pale areas sharply defined; head rather 

 small, two-thirds as wide as the prothorax and narrower than an 

 elytron; antennae black, the basal joint rufous, with a black streak 

 above, three-fourths as long as the elytra, the medial joints barely 

 twice as long as wide; prothorax not one-half wider than long, the 

 parallel sides broadly, subevenly arcuate, becoming gradually very 

 feebly sinuate toward the angles; impressions feeble, the stria nearly 

 entire, fine; foveae large, shallow, rugulose, the bottom an elongate 

 deep linear impression, the carina long, distinct; elytra barely one- 

 half longer than wide, almost one-half wider than the prothorax, 

 parallel, with broadly arcuate sides, obtusely rounded at apex; 

 striae entire, rather fine, feebly impressed, the punctures fine, obso- 

 lete near the apex; foveae small, at basal and apical third. Length 

 (cf) 3.4-3.5 mm.; width 1.3 mm. Michigan (Marquette), Sher- 

 man nigripes Kirby 



7 Species occurring only to the westward of the Rocky Mountain 



divide 8 



Species inhabiting only the regions east of the Rocky Mountains 31 



8 Pale elytral maculation very restricted 9 



Pale maculation much more extended, though sometimes very nubilous 



and feebly defined 10 



9 Body shining, black, the anterior parts but faintly alutaceous; elytra 

 with a short narrow faint fascia externally near basal third, and a 

 small external spot near apical fourth; under surface black, the epi- 

 pleura rufous, at least basally ; legs piceo-rufous; head well developed, 

 three-fourths as wide as the prothorax and even somewhat wider 

 than an elytron, the eyes prominent; sulci moderately deep; antennae 

 slender, black, the basal joint rufous, black above, four-fifths as 

 long as the elytra, the medial joints nearly three times as long as 

 wide; prothorax about one-half wider than long; base somewhat 

 wider than the apex; sides subevenly, moderately rounded, rather 

 abruptly sinuate at the angles, which are right and sharp; surface 

 smooth, the impressions obtuse but evident, the fine stria only ex- 

 tending between them; foveae small, deep, sublinear, the carina 

 long and strong; elytra one-half longer than wide, only a third wider 

 than the prothorax, parallel, with feebly arcuate sides, rather grad- 

 ually parabolic behind; striae entire but very fine, unimpressed, the 

 punctures very fine, not very remote; foveae small, before basal 

 and near apical third. Length (cf) 3. 8-4.0 mm.; width 1.3-1.55 mm. 

 California (San Francisco). Two examples, taken by the writer. 



augurale n. sp. 



Body in color and maculation nearly as in the preceding, but more aeneous 

 above; legs brownish-rufous, the epipleura obscure rufous; anterior 

 parts more alutaceous; head not quite so large, scarcely as wide as 

 an elytron, the antennae nearly similar, but with the medial joints 

 about two and one-half times as long as wide; prothorax much nar- 

 rower, only two-fifths wider than long, barely wider at base than 

 at apex, the sides subevenly though less strongly rounded and be- 

 coming sinuate, not at the angles but well before them, being par- 

 allel in basal seventh; surface nearly similar but duller and with 



